class Customer{
	String account;
	int id;	
	static int count = 0;
	Customer()	{
		count++;	id = count;		
	}
	public static void main (String[] args) {
		Customer c1 = new Customer();	
		Customer c2 = new Customer();	 System.out.println(c2.id);
		/*..*/		
		Customer zs = new Customer();		 System.out.println(zs.id);
		
	}
}